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Updated: May 29, 2025
The advance that was brought about by Edison's carbon transmitter will be more apparent if we glance first at the state of the art of telephony prior to his invention. Bell was undoubtedly the first inventor of the art of transmitting speech over an electric circuit, but, with his particular form of telephone, the field was circumscribed.
To send out continuous waves in the ether such as are needed for wireless telephony instead of damped waves which are, at the present writing, generally used for wireless telegraphy, an electric oscillation arc or a vacuum tube oscillator must be used, see C, instead of a spark gap.
The very crickets are expert in telegraphy, or telephony, which is ultimately the same thing. After transmitted sound the next thing is the visible signal, and this has been employed by human beings from the earliest ages in transmitting information to a distance. It is a method which will perhaps never be wholly abandoned. Observe the surveyors running a trial line.
He opened operations from a room over the Gold Exchange with thirty to forty subscribers. "He also engaged in putting up private lines, upon which he used an alphabetical dial instrument for telegraphing between business establishments, a forerunner of modern telephony. This instrument was very simple and practical, and any one could work it after a few minutes' explanation.
The craze for "cheap and nasty" telephony is passing; and the idea that the telephone is above all else a SPEED instrument, is gaining ground. A faster long-distance service, at double rates, is being well patronized. Slow-moving races are learning the value of time, which is the first lesson in telephony. Our reapers and mowers now go to seventy-five nations.
More than once he protested hotly, "You shouldn't have done that! It's all their affair, not ours!" And Billie usually returned, just as warmly, "I don't care! I think Powart is a scoundrel!" And it was in the midst of one of these tiffs that the doctor interrupted, exactly as though the telepathy was telephony: "Quiet, you two.
To send out continuous waves in the ether such as are needed for wireless telephony instead of damped waves which are, at the present writing, generally used for wireless telegraphy, an electric oscillation arc or a vacuum tube oscillator must be used, see C, instead of a spark gap.
Some other young man may create a commercial department on wide lines, a work which telephone men have as yet been too specialized to do. Whoever does this will be a man of comprehensive brain. He will be as closely in touch with the average man as with the art of telephony. He will know the gossip of the street, the demands of the labor unions, and the policies of governors and presidents.
In writing this book it is taken for granted that you are: first, one of the several hundred thousand persons in the United States who are interested in wireless telegraphy and telephony; second, that you would like to install an apparatus in your home, and third, that it is all new to you.
Obviously when we began transmitting SSB telephony below 3.600 we were greeted with angry protestations from the CW operators there. And what was worse, the voices of Greek amateurs were not heard in the DX portion of the phone allocation from 3.750 to 3.800 MHz. "Unfortunately, there was another and more serious snag.
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